GroupM, the world’s leading media investment group, today announced a portfolio restructure to improve service and delivery to clients. GroupM is committing to the expansion of Essence, its digital-first agency, by adding traditional media capabilities…

This article originally appeared on Campaign Live. The digital advertising charge sheet: 1. Advertising can’t be seen, at least not by humans. 2. A huge amount of impressions are fraudulent 3. Many actual impressions occur…